Front bumper



FIG. 1 is a front view of a front bumper showing our new design;

FIG. 2 is a rear side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

It will he understood that the broken lines shown in the drawings illustrate portions of the front bumper that form no part of claimed design. 

CLAIM The ornamental design for a front bumper, as shown and described. 